Tohutoro APA (7th ed.)

Sommer, R. (2002). A practical guide to behavioral research: Tools and techniques (5th ed.). OUP.

Tohutoru Kātū Chicago (17th ed.)

Sommer, Robert. A Practical Guide to Behavioral Research: Tools and Techniques. 5th ed. New York: OUP, 2002.

Tohutoro MLA (9th ed.)

Sommer, Robert. A Practical Guide to Behavioral Research: Tools and Techniques. 5th ed. OUP, 2002.